Nurture strength of spirit to shield you in sudden misfortune.
But do not distress yourself with dark imaginings.
Many fears are born of fatigue and loneliness.
Beyond a wholesome discipline,
be gentle with yourself.

Thessalie, are you using the Link button in the tool bar? If so, that is for adding a link which is what you get.

To embed the video, just paste (Ctrl V) the text of the link into your post. The forum software knows how to display that as en embedded video.

If you change the post editor to text mode (button at top left corner) you should see a url that looks like the first one below. If it looks like the second, with url tags, you are doing something wrong.

That works when I use the button for external links, I think it didn't work when I just copy/paste the links (I though it was the same but I must say it didn't work untill I used the button !)

Nurture strength of spirit to shield you in sudden misfortune.
But do not distress yourself with dark imaginings.
Many fears are born of fatigue and loneliness.
Beyond a wholesome discipline,
be gentle with yourself.